Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe5106e6cad0f28…

MALICIOUS

PDF

184.3 KB Created: 2015-07-24 01:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b544f79e99b563aae3cd63a58b0226ad SHA-1: d27321d4c68115f81c65ed1e4e636441f2757b09 SHA-256: 3fe5106e6cad0f281b3530494d5febaa0e50869f97ce35df4e533794d6959d22
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to a malicious site for malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+combiloader+215&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185379_rabochaya_programma_po_obzh_8_klass_smirnov_hrennikov_2013.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185381_koduy_strok_buhgalterskogo_balansa_2015_dlya_maluyh_predpriyatiy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184608_klyuch_dlya_windows_7_domashnyaya_bazovaya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023a9a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A9A 3556 bytes
font_01_sfnt_off0002481d.bin
2293cee27fe22403e9f74693072082500626bc43a2320da7ec8e563c7ac1ec66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2481D 15184 bytes
font_02_sfnt_off00027744.bin
cf2a73cf5d912d0f83e3a64f8c5beb2dfbe3d6f9a5649ce01eb63185820ac08a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27744 14940 bytes
font_03_sfnt_off0002a34d.bin
9c39a9924c35927c3e25fb60b35c55d622e4e9a34dd2bf81bc3f373031c9bd81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A34D 6908 bytes
font_04_sfnt_off0002b75d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B75D 6084 bytes
font_05_sfnt_off0002c6f2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6F2 3752 bytes

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